I don’t see the colour schemes for either, anyway, because I exclusively use custom skins to save as much screen real estate as possible. =o)

I never really used speed dial. That’s what my bookmarks toolbar (carefully moved to be in-line with the menus to save yet more precious vertical screen space) is for.

There’s a plugin for Firefox that can lock tabs from being closed that I used to use. Oh, and try CTRL-TAB: that’s what most programs seem to use to cycle through tabs (at least on Windows – ALT-TAB switches through application windows), and both Firefox and Opera (for Windows, again) are no exception.